com.cosylab.epics.caj.cas

Class ProcessVariableEventDispatcher

java.lang.Object

com.cosylab.epics.caj.cas.ProcessVariableEventDispatcher

All Implemented Interfaces:

gov.aps.jca.cas.ProcessVariableEventCallback

public class ProcessVariableEventDispatcher
extends Object
implements gov.aps.jca.cas.ProcessVariableEventCallback

Event callback dispatcher (fan-out).

Version:

$id$

Author:

Matej Sekoranja

Field Summary

Fields

Modifier and Type	Field and Description
protected gov.aps.jca.cas.ProcessVariableEventCallback[]	cachedList
protected ArrayList	listeners List of listeners.
protected gov.aps.jca.cas.ProcessVariable	processVariable PV to dispatch for.

Constructor Summary

Constructors

Constructor and Description
ProcessVariableEventDispatcher(gov.aps.jca.cas.ProcessVariable processVariable) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
void	canceled()
gov.aps.jca.cas.ProcessVariable	getProcessVariable() Get served PV.
void	postEvent(int select, gov.aps.jca.dbr.DBR event)
void	registerEventListener(gov.aps.jca.cas.ProcessVariableEventCallback listener) Register new listener.
void	setProcessVariable(gov.aps.jca.cas.ProcessVariable processVariable) Set served PV (allow PV to be set later to avoid chicken-egg problem).
void	unregisterEventListener(gov.aps.jca.cas.ProcessVariableEventCallback listener) Unregister new listener.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

processVariable

protected gov.aps.jca.cas.ProcessVariable processVariable

PV to dispatch for.

listeners

protected ArrayList listeners

List of listeners.

cachedList

protected gov.aps.jca.cas.ProcessVariableEventCallback[] cachedList

Constructor Detail

ProcessVariableEventDispatcher

public ProcessVariableEventDispatcher(gov.aps.jca.cas.ProcessVariable processVariable)

Constructor.

Parameters:

processVariable - PV to dispatch for, can be null.

Method Detail

getProcessVariable

public gov.aps.jca.cas.ProcessVariable getProcessVariable()

Get served PV.

Returns:

the processVariable

setProcessVariable

public void setProcessVariable(gov.aps.jca.cas.ProcessVariable processVariable)

Set served PV (allow PV to be set later to avoid chicken-egg problem).

Parameters:

processVariable - the processVariable to set

postEvent

public void postEvent(int select,
             gov.aps.jca.dbr.DBR event)

Specified by:

postEvent in interface gov.aps.jca.cas.ProcessVariableEventCallback

See Also:

ProcessVariableEventCallback.postEvent(int, gov.aps.jca.dbr.DBR)

registerEventListener

public void registerEventListener(gov.aps.jca.cas.ProcessVariableEventCallback listener)

Register new listener.

Parameters:

listener -

unregisterEventListener

public void unregisterEventListener(gov.aps.jca.cas.ProcessVariableEventCallback listener)

Unregister new listener.

Parameters:

listener -

canceled

public void canceled()

See Also:

CompletionCallback.canceled()